Guard for leather-shaving machines



June 24, 1930. R RNERS 1,768,213

GUARD FOR LEATHER SHAVING MACHINES Filed Aug. 8, 1927 A TTGRNEYS.

Patented June 24, 1930 r 1 UNITED STATES PATENTOFFICE J NAPOLEON R. RIVERS,

OF ASH'IABULA, OHIO GUARD .FOR LEATHER-SHLAVIN G MACHINES Application filed August 8, 1927. Serial No. 211,559.

This invention relates to improvements in leather shaving machines and more particu-' larly to that type in which the leather to be shaved is presented to a rotary cylindrical 5 cutter by the adjustment of a roll over which the leather is fed.

In leather shaving machines of the class referred to above, it frequently happens that the operator of the machine suffers serious injury which is occasioned by the leather wrapping around the rotary cutter, the operthe cutter, but even where this alleged safeguard is employed, accidents are liable to occur, particularly if there is any slippage or breaking of the belt by which the brush is driven. Therefore the present invention has for its primary'objeet to provide a novel guard, for installation upon leather shaving machines of the class referred to and which guard will effectually prevent wrapping of the leather around the c utter,-the invention therefore contemplating the provision of means'for positively avoiding the accidents referred to. v v

Another object of the invention is to provide, in a leather shaving machine of the class described, a guard, for-the -purpose above stated, so constructed and adapted to be so mounted as not to, in any way, inter- 40 fere with the operation of the machine and,

by reason of the certainty of its functioning,

to prevent wrapping of the leather about the rotary cutter, greatly facilitating the operation of the machine and enabling the operator to increase the output of the machine, the guard'serving also to prevent injury to the leather which is certain to occur if the leather is permitted to wrap about the cutter.

,50 While the accompanying drawings and the description which is to follow, constitute a disclosure of the preferred embodiment of the invention, it will be understood that various changes may bemade within the scope of what is claimed.

In the accompanying drawing Figure 1 is aview partly in side elevation and partly in section illustrating so much of aleather shaving machine as is essential to an understanding of the invention, the guard embodying the invention being shown in side elevation;

Figure 2 is a top' plan View of the guard and the parts of the machineshown in Fig. 1.

In the drawing the rotary cutter is indicated by the reference numeral 1 and is'of the ordinary type and mounted upon a shaft 2 which is rotated at a high rate of speed in the direction indicated by thearrow in Fig. lof the drawing. The numeral 3 indicates a roll which is mounted in a suitable bracket 4, in advance of the cutter 1 and over which the piece of leather or hide to be shaved,

and which is indicated by the reference letter L, is manuallyfed by the operator of the machine, the bracket 4 being adjustable, through the medium of a foot lever (not shown) so as to hold the piece of leather to the cutter 1. In practice, a shaft 5 is rotatably mounted in the frame of the machine below the cutter shaft 2 and in rear of the supporting bracket 4 for the roll 3, and a brush 6 is mounted upon the shaft and is presented to the under side of the cutter 1, the

shaft being rotated in the direction indicated by the arrow in Fig. 1. The purpose of the brush 6 is to' prevent the end of a piece of leather fed' into the machine over the roll 3 and between the same and the cutter 1, being carried in a rearward direction byadherence to the surface of the cutter, but in the event of breakage of the belt by which the shaft 5 is driven, the brush 6 ceases to function and, as a consequence, the piece of leather is liable to be wrapped about the cutter 1 and, due to the high speed of rotation of the cutter, is liable to be quickly drawn into the machine with the result that the operators hands are subject to injury through contact with the cutter, it being by the numeral 8, the forward edge understood that the speed at which the leather is fed over the roll 3 is much slower than the speed of rotation of the cutter, so that when the leather wraps about the cutter, the speed of travel of the piece of leather is instantly quickened and the operator of the machine, who is grasping the piece of leather and feeding the same over the roll, has insufiicient time in which to release his hold upon the'piece of leather, with the result that his hands are drawn into contact with the cutter; I

The guard embodying the invention is indicated, in general, by the numeral 7 and the said guard comprises a metal plate having a thickened forward portion indicated of which is concaved in the direction of the thickness dimension of this edge as indicated by the numeral 9, so that a guard lip 10 is provided at the forward edge of the plate and, in the proper positionof the'guard as illustrated in Fig. l'of the drawing, extends into the space between the under side ofthe cutter 1 and the upper side of the rotary brush 6; From its thickened forward portion 8, the, guard plate-7 is extended rearwardly and mounted upon a cross rod 11 which is sup I, claim as new 1s: 7,

ported within the frame of the machine, a pair ofU-bolts 12 being disposed to embrace the under side of the cross rod 11 and having their arms fitted through openings'i'n theguard plate 7 and threadedfor-the application thereto of nuts 13 which are tightened to secure the plate inplace upon the said rod, the plate being preferably provided upon its under side with a longitudinal boss 14 which has a concave under side embracing the upper side of the cross rod 11 as clearly shown in Fig. 1. In this manner the guard 7 is firmly supported in position with its lip 10 extending in proximity to the under sideof the cutter 1 and in the space between the under side of the cutter and the upper side vention it will be evident that due to the peculiar formation of the guard and the manner in which the same is arranged,

wrapping of the leather or hide about the cutter 1 is positively prevented and therefore the machine may be operated without any liability of injury to the operator in feeding and gulding the leather into the machine over the roll 3.

Having thus described my invention what 1. Ina leather shaving machine, the combination with a rotary cutter, a leather feeding roller, a rod extending parallel to said cutter, of an elongated substantially wide guard plate having a longitudinally extending concave edge adapted to fit in close proximity to said cutter, and means for supporting said guard plate for transverse tending the entire width of the plate tofacilitate the moving of the plate to a proper position, means for supporting said guard plate for transverse and rotary adjustment upon said rod and permitting the concave face along the edge of said guard plate to be adjusted toward or away from said cutter. 3. In a leather shaving machine,the combination with a rotary cutter, a leather feedingroller, a supporting rod extending substantially parallel to said cutter, of an elongated substantially wide guard plate having transversely extending apertures formedtherein, clamping means extending through said apertures and engaging said, rod for clamping said plate in transverse and'rotary adjusted relation with respect to said rod, whereby the inner edge of said plate may be held in proper spaced relation with respect to said cutter.

' 4. Ina leather shaving machine,-the combination with a rotary cutter, a leather feeding roller, a supporting rod extending substantially parallel to said cutter, of an elongated substantially wide and substantially flat plate constituting a guard, said plate provided with an upwardlyje ding end having along its edge a concave face projecting longitudinally of the plate, the plate being extended for a distance be ond said.

rod to facilitate the adjustment 0 the plate transversely and in a rotary manner upon said rod and causing the concave face of said plate to assume a proper relation with res ect to said cutter;

n testimony NAPOLEON R. RIVERS.

whereof-I aflix my signature, 

